I initially posted the question below under a different topic but got no relies. Hopefully there is somebody out there who can provide us with the information required.
We are using a Triadis Floice system which can receive other Flarm traffic. Linked to a Garrecht TRX-1090 the traffic information gets mixed together with mode-S ADS-B extended squitter and can be displayed on any Garmin TIS compatible display with a RS232 interface.
Unfortunately the Garmin G500H in our helicopter is only accepting ARINC 429 and not RS232 as source for traffic information. We know that probably the following labels on the RS232 are used for the TIS.
Absolute Traffic:
$PGAV5,<age_of_position_data>,<hexaddress>,<lat>,< lon>,<gnssAlt>,<baroAlt>,<flightid>,<track>,<groun dspeed>,<verticalspeed>,<rssi>,<category>,<dataSou rce>,<rssiDistance>,<ageMDS>,<ageVelocity>,<agePos ition>,<squawk>*<nmeachecksum>
Relative Traffic:
$PFLAU,<RX>,<TX>,<GPS>,<Power>,<AlarmLevel>,<Relat iveBearing>,<AlarmType>,<RelativeVertical>,<Relati veDistance>,<ID>
The challenge is now to specify the exact ARINC labels (probably label 735) used by the Garmin G500H to display traffic. We have found a company that can program a converter to translate the data labels but we need to specify them first. Garmin is not willing to give us any information as the Flarm is not officially supported equipment. We could purchase a commercial TAS or TCAS but would still miss out on all the numerous gliders equipped with Flarm in the Swiss mountains.
Does anyone know the exact labels used by the Garmin G500H for traffic display? Thanks in advance.